For those times when portability is absolutely, positively, not a concern, there will soon be a new choice in “mobile” computing. The GScreen Spacebook is a chunky little laptop that packs dual slide-out 17-inch LCD panels. After quite a lot of build up, the computer finally has a ship date this November.

While not quite in the Duke Nukem Forever league, gScreen’s SpaceBook has truly earned its stripes as “delayware.” The product in question is a dual-screen notebook that was first announced in 2009 but never released. It now seems that the dual-screen notebook is finally ready for market action. gScreen, the Alaska-based startup behind the SpaceBook, is now taking pre-orders for its flagship product.

Once you've rocked out with dual screens on your desktop, you'll wonder how you ever managed to do anything with but a single display. If you find yourself in that category, you should probably stop reading, lest you suddenly feel hobbled by your notebook.

Coming soon, Alaska-based gScreen will release a dual 15.4-inch screen laptop dubbed the Spacebook. Aimed at professional designers, gScreen also has dual 16-inch and 17-inch models on tap, all of which sport full sized screens for the secondary display.

"We designed this knowing that many may not need the extra screen at all times," company founder Gordon Stewart told Gizmodo.

To address this, the secondary display will feature a sliding mechanism so you can tuck it away when not in use. Of course, the obvious downsides to having a twin-display notebook are weight (think 12 pounds or more) and battery life, so ti will be interesting to see how gScreen tackles these potential roadblocks.

Stewart says he's trying to keep the price under $3,000 and hopes to have the Spacebook for sale through Amazon.com by December of this year.

Thanks to some intrepid reporting by our friends over at Gizmodo, we can finally see just what the rumored gScreen Spacebook will bring to the table.

The gScreen, which has been created by Gordon Stewart and his Alaska-based cronies, will offer about 30-inches of screen space when you’ve got both screens active, and is aimed at professional designers, filmmakers, photographers and others that hunger for screen real estate.

These beasts will run Windows 7 and will be powered by an Intel Core 2 Duo processor. It’ll also pack 4GB of RAM, a high-end Nvidia GF900M GT discrete GPU and a (planned) 7,200 RPM HDD.

No word yet on an official price, but Gordon hopes that he can keep it under $3,000 and they plan to have it sell on Amazon by December.

It appears as though the mobile sector is gearing up for a dual-screen revolution, or at the very least, we expect to see the concept start to become more readily available. Last month Lenovo introduced its two-screen W700ds Thinkpad, and now gScreen is seeing double.

Unlike Lenevo's W700ds, gScreen's G400 sports two full sized 15-inch LED-backlit displays. Graphics chores are handled with either an Nvidia Quadro FX 2700M or GeForce 9800M GT, both with 512MB of video memory. Other specs include an Intel Core 2 Duo T9600 (2.8Ghz) or P8400 (2.26GHz), up to 8GB of RAM, up 500GB of hard drive space, and the usual assortment of ports.

The company says it is also working on a ruggedized version called the TITAN M-1, which is "being built specifically to specs requested by the U.S. Navy for extreme environments." The internal hardware will be a bit different, not all of which gScreen is wiling to comment on, but did say it will come equipped with an Intel Core 2 Quad QX9300 processor, 4GB of RAM, and a 500GB hard drive and built to MIL-STD810F standards.

No word yet on price or ship date, but gScreen says customers can reserve the G400 starting February 25th through Amazon.com.